Well the only question I have is, is it worth it? What can I gain?

 

i think it was worth it, i actually just bought another one because my map lights stopped working ha.

its always nice to have the outside temp, and i use the garage opener spot to hold stuff

 

I dont know is he's talking about hooking the VSS wire up or the OHC in itself. I need to fix my map lights, only one will work right now. Time to bust out the soldering iron lol.

 

I meant is it worth hooking the wires up to the GEM? Mine has been working for a year now and I am just curious to see if hooking the wires that go the GEM would benefit me.

 

From what I can tell without it hooked sometimes in hot weather the OHC doesn't update the temp. I'm gonna hook mine up tomorrow just cause, it won't take me more than 5 minutes and I have all the wire and everything.

 

the GEM is what allows the outside air temp to be accurate. if you dont hook it up the temp might be off depending on where you mount the temp sensor, it adjusts for the speed to counter wind chill

 

Is the GEM located behind the radio?

 

Yes, I think on the left side should be like a black box. I have a 04 and I've never seen one so I might be wrong, but I'm pretty sure it is. It shouldn't be a problem for you since you've already ran one wire to the radio for the OHC. I have to run the wire down to the SJB in the passenger kick panel.

 

the best way to get the best results is to cut out the headliner from the doner explorer thats what i did..oh and i charge 47 bucks shipped

 

I'm going to disagree with that, I did the press hard method and it worked fine for me, it looks like it was installed from the factory. Just take your time and you'll be fine. Remember measure twice cut once.

 

just start the hole out small and gradually increase the hole size, youll never see the hole so it doesnt have to be neat

 

FYI: it doesn't counter wind chill -- that's an often distributed misconception.

There is no wind chill without condensed moisture on the sensor, and the system has no way to know if the sensor is moist. If it compensated for "wind chill" in dry weather, the temperatures would read artificially HIGH.

Wind chill is used by humans because our skin is moist. Therefore we feel the effect of moving air evaporating more water from our skin. The sensor doesn't.

A dry sensor in a 30 mph wind and a sensor in still air of the same temperature reads the same. If the air is 70 degrees, both sensors will be at 70 degrees.

If the wind were fast enough, friction would HEAT it, lol -- but none of you drive fast enough to see that on your OHC -- I think...

The only reason to monitor the vehicles speed is to make a good decision about whether to pay attention to the sensor. The OHC decides that if the weather is fairly warm, then engine heat might play a big role in the sensor temperature so it holds off reading. What you get is a reading that doesn't change. That's why the VSS is important if you always want updated data.

You may not notice it sometimes, but it's a definite problem which eventually comes to your attention. I installed mine in the winter and didn't notice a problem until the spring and summer of the following year, lol.

 

"you can dooo it" It's not all that hard...it is alot of work, it takes some time and some fustration...but in the end its all worth it! It took me and my ladie two different days "a weekend" and about 6 hours total to have it hooked up and ready to go!

 

good info john

 

You can also do the sunroof version as well. It's a little different on installing the bracket and how the headliner needs to be cut.

 

price?

lol

 

25$ shipped? im waiting on my other OHC to come so once i get that installed and check out all the wiring from that one ill let you know for sure, but it should be the whole assembly.

 

I parked by a 07 ranger wed. at work. At the end of the day the guy was looking at my truck and asked if the OHC was an option.

They are very easy to install cutting and running the wores through the headliner is the hard part. If you have access to a electrican snake use it

 

isnt that the truth

 

live by it or learn by it!

 

When I first did my OHC I did the wiring a little half assed. I powered the unit by stuffing one of the wires into a fuse in the fuse box. What resulted is I didnt have a dimmer and in the day it kinda sucke because you could barely see the display.

I followed Griggs's "how to" and it worked great. The best part is I now have a dimmer and I dont have wires hanging out of my fuse box.

Thanks Griggs

 

My pleasure, thank you.

Probably the most popular of all the mods I've documented. I wasn't the first one to do it, but AFIK, I was the first one to do it without removing the headliner. The original how-to on this by someone had you removing the headliner and I know some like to to it that way, but for me it's too much work, lol.

 

Any idea why mine would be like 8-10 degrees off?

 

8-10 degrees to high? could be engine heat, ive got my sensor sealed off from the engine for that reason

 

I keep mine sensor right up by the grill. It gets no engine heat... just outside air.